One audience member asked, "Is there a clear distinction in cryptography where national security ends and commercial applications begin?" He basically wanted to know the difference between commercial and government class cryptography. Diffie responded that there has been a recognition that "the strength of cryptography is not the place to separate the two." He said that the most important development of the last several years has been the adoption by NSA of Suite B, which is a public set of standard cryptographic algorithms that are approved for unclassified and classified government data.

If you follow cryptography most of the contents of this article may be old hat, but there are a few minor data points that I found interesting, such as this one, and the NSA's perspective on the resilience of AES to quantum computer based cryptanalysis.

PKC anniversary event provided insights into the past, present, and future of cryptography